>and i want an opinion of fair price.
yes, always sad to hear about a f0rced sale of something you have your heart, soul and time into... especially to pay the taxman!
however, in current condition, your 066 is worth about $650 - 750! more in a bull market, maybe even less in a bear market. in any event, maybe worth more to you. imo, what will hurt your sale is needing to do it in a hurry. and the scored/scuffed piston. might be worth putting in a fresh piston and set of rings. you can do it for under $40.00 off ebay, free shipping. Meteor w/Caber rings. add in a base gasket, new filter and spark plug... then seat the rings. $ 60-65. then your saw could be worth upwards of $900 or so on a good day, in a good market... and given someone just had to have it (yours). good comparables can be had on C. L. no shortage of bigger saws available out of Seattle, Portland, Denver... etc. logging areas. one in our area has been on the list for over a month, a MS 661, used 2 times! reportedly... asking - $900.00. status: Unsold! $750/800, or less and 50 for shipping can usually pull in a good power head from just about any city... if I had to advise someone in your shoes, not knowing how much tax liability you do in fact owe... or why?... I would say this: get your taxes prepared, and filed. stop the clock on your IRS Form 1040; YE 12/31/2015! send in with it as much as you can muster up. don't worry, they will bill you! expect a letter within 30-45 days. then use your saw to hustle up some work, and make sure your #1 priority it to get that 2015 tax debt behind you. do what ever it takes, legally. you wont sleep well until u do! let's hope you don't owe any 941 employee taxes/returns... state and fed levels. you have about a 6 month window to maneuver in for last year and year 2016 first quarter renditions... and be semi in control. doubt a fire sale or garage sale 066 will make much of a dent in your situation. $600-700 usually is not a big tax bill, even if tough to pay due to short-term cash flow, etc. Good Luck... and Best Wishes!